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  • Written by
    Callie Marsalisi
  • Fact Checked
  • Updated

Having a local furnace repair expert you can trust is important for keeping your heating and cooling services running smoothly. Whether it's a furnace emergency or just regular maintenance, your local professionals are here to help. Below, find our discussion of common furnace issues, plus our guide to the top heating, ventilation, and air conditioning (HVAC) servicers in O'Fallon, Missouri. If you learn from this article that you need a full system replacement, you can explore our picks for the best furnace brands.

10 Best Furnace Repair Companies in O'Fallon

Brands are algorithmically curated from a database of local service providers near you. We require a minimum number of Google reviews and average ratings for provider inclusion.

Top Rated Provider
Stay Cool Climate Control Logo
Top Rated

Stay Cool Climate Control

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 556 reviews


407 Sonderen St, O'Fallon, MO 63366

(636) 747-1762

staycool-hvac.com
Faszold Heating and Cooling Logo

Faszold Heating and Cooling

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 816 reviews


1613 E Terra Ln, O'Fallon, MO 63366

(636) 735-7842

www.faszold.com
Hoff Heating & AC Logo

Hoff Heating & AC

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 1308 reviews


1520 Kemmar Ct, O'Fallon, MO 63366

(636) 388-4141

hoffheating.com
Agers Heating & Air Conditioning Logo

Agers Heating & Air Conditioning

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 424 reviews


64 Boone Hills Dr, St Peters, MO 63376

(636) 422-5665

www.callagers.com
Jerry Kelly Heating & Air Conditioning Logo

Jerry Kelly Heating & Air Conditioning

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 5359 reviews


4631 N St Peters Pkwy, St Peters, MO 63304

(636) 757-8506

www.jerrykelly.com
Renaud Brothers Heating & Cooling Logo

Renaud Brothers Heating & Cooling

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 354 reviews


3037 Hopewell Rd, Wentzville, MO 63385

(314) 876-8076

renaudbrothershvac.com
Fresh Air Heating & Cooling Logo

Fresh Air Heating & Cooling

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 1194 reviews


612 Spirit Valley E Dr, Chesterfield, MO 63005

(636) 224-6106

www.ineedfreshair.com

Elite Mechanical LLC

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 211 reviews


108 Hamilton Industrial Ct, Wentzville, MO 63385

(636) 887-0971

elitecomfortexperts.com

AAA Heating & Cooling

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 265 reviews


407 E Pearce Blvd Ste A, Wentzville, MO 63385

(636) 278-9616

www.aaastl.com

Superior Service

5/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 1295 reviews


17722 Chesterfield Airport Rd, Chesterfield, MO 63005

(314) 717-0639

www.superior-service.com/locations/ch...

Facts about O'Fallon

  • Average Min Temp Percentile:
    66%
  • January Average Min Temp:
    22°F
  • Climate Zone:
    Mixed Humid
  • Average Energy Cost:
    0.1/kWh
  • Median Year Houses Built:
    1996
  • Annual Annual Snowfall:
    0.45”

Services Offered by Furnace Repair Companies

Your local furnace repair company provides a number of services to keep your system working efficiently and effectively. We outline some common offerings below.

Repair and Maintenance

Timely repairs not only restore your furnace's function, they also extend its lifespan and optimize energy efficiency. Furnace repair professionals can diagnose and repair any issues with your furnace, including a clogged air filter, malfunctioning thermostat, or broken blower motor. Qualified HVAC technicians examine and fix individual problems such as possible gas leaks, malfunctioning thermostats, faulty ignitions, or damaged heat exchangers. Furnace experts can also complete routine HVAC maintenance to avoid unnecessary breakdowns. Regular maintenance involves inspecting and cleaning your furnace, replacing air filters, lubricating moving parts, and making sure all components function correctly.

Installation

Your local HVAC expert can upgrade your furnace to a more energy-efficient model, like a heat pump. If your system is beyond repair, they can also help install a new furnace. Your technician will begin by assessing your home's layout and heating needs. Then, the tech will recommend the best furnace model for your requirements and budget. Your HVAC expert can integrate your new system with your existing air ducts and thermostat, and they should follow industry standards and safety protocol for proper exchange of the existing furnace and connection. Post-installation, your technician will complete one last inspection to ensure your furnace runs properly.

Inspection

You likely need an inspection if you notice that your furnace isn’t turning on. During this inspection, a technician will examine each part of your furnace to look for potential issues. Inspections normally include examining the heat exchanger for cracks or damage, checking for any gas or fuel leaks, cleaning and replacing air filters, testing the thermostat's accuracy, and inspecting the burner and ignition system. Your technician will look at the heating system's safety and efficiency and make any needed repairs or adjustments. Yearly furnace inspections and tune-ups help ensure optimal performance and help prevent potential breakdowns, which promotes a safe living environment during chilly winters.

Emergency Services

Emergency furnace repair services will restore heat to your home if your furnace breaks down on a cold winter night. Many companies offer 24/7 services to help get your furnace up and running as soon as possible. These services help with unexpected breakdowns, malfunctions, and other safety concerns. When a furnace fails in extreme weather conditions, and you're unable to open windows for fresh air, it can pose serious discomfort and health risks from poor indoor air quality. Though emergency services will cost more than scheduled services, it’s worth it to protect your health.

Factors To Consider When Choosing a Local O'Fallon Furnace Repair Service

There are several important considerations to keep in mind when selecting a local O'Fallon furnace repair service. We go over some of the most important below.

  • Cost: Compare service offerings and prices among several O'Fallon furnace repair companies. Look for transparent and competitive pricing, but avoid extremely low-cost options. Abnormally low prices may indicate that a company is making up the difference by compromising material or workmanship quality.
  • Guarantees: Look into the warranties or guarantees provided by the furnace repair provider. A reputable company should back its work with guarantees on repairs and replacement parts. This assurance provides peace of mind knowing you can rely on the service provider if any problems arise post-repair.
  • Licensing: Make sure your furnace repair provider holds all the required licenses and certifications. In Missouri, your HVAC contractor must obtain certification from your local city or municipal government. Proper licensing helps ensure that technicians are qualified to handle furnace repairs safely.
  • Qualifications: You can inquire about a company's training policies and the experience of its technicians. Companies that provide ongoing training are more likely to have technicians that are up to date on the latest repair techniques. You want a company that employs well-trained technicians who are experienced in working with various furnace makes and models.
  • Reputation and reviews: Browse online reviews and testimonials to get a sense of a company's reputation. It's important to look for a provider with overall positive reviews, but you should also pay attention to how it addresses negative reviews and complaints. This can tell you a great deal about a provider's commitment to customer service.

How Much Does a Furnace Repair Cost?

The cost of furnace repair varies depending on several factors, such as the extent of the damage, the HVAC unit type, and the cost of replacement parts. Furnace repair costs an average of $424, but the final price depends on the situation. Below, find a list of common repairs and their costs.

  • Broken thermostat: $79–$394
  • Cleaning: $47–$63
  • Cracked heat exchanger: $1,577–$2,759
  • Damaged blower bearings: $24–$118
  • Damaged blower belt: $24–$87
  • Filter change: $32–$118

Frequently Asked Questions about Furnace Repair in O'Fallon

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